Add JRiver Media Center

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• App Name: JRiver Media Center
• Download URL: https://www.jriver.com/download.html (following the right link up to https://yabb.jriver.com/interact/index.php/topic,133416.0.html)
• Website URL: https://www.jriver.com/
• App Summary: JRiver Media Center, the most comprehensive and seamless software available for managing and playing your media. Its scope includes almost all formats of audio, video, and images. Media Center can also record television and manage documents.